DELFINADO: LAELAPTOID MITES OF THE PHILIPPINES 105 



The female of this species is characterized by the serrate sternal 

 setae I, the serrate setae on all coxae, and the 3 pairs of long, sinuate 

 setae on the posterior margin of the dorsum. The chelae are long 

 and slender, hyaline; the tip of the movable chela is scoop-like; the 



W 



Fig. 36. Haemogamasus quadrisetatus, female: A, anterior portion of dorsal 

 plate; B, posterior portion of dorsal plate; C, chelicera; D, venter. 



fixed chela is more slender and curved with a hollow tip. The sternal 

 plate is trapezoidal, with the lateral and posterior margins slightly 

 concave. The epigynial plate is broadly rounded posteriorly, with 

 about 38 smooth setae. The anal plate is pyriform, with 6 smooth 

 accessory setae; the adanal setae are smooth and are shorter than 

 the postanal seta; the anal opening is large and is located near the 

 posterior margin of the plate just above the postanal seta. The setae 

 on the venter are numerous, long, and mostly serrate. The dorsal 

 plate is weakly sclerotized, incompletely covering the dorsum. The 

 3 pairs of posterior dorsal setae are mostly serrate and are unusually 

 long and sinuate. 



Specimen examined. Mindanao: Eastern slope of Mount McKin- 

 ley, 5400 ft. elevation, Davao, August 20, 1946 (H. Hoogstraal), 

 female, ex Macaca philippinensis mindanensis. 



This is probably a variable species. The description differs from 

 the original one by Vitzthum (1926) from Java, and Asanuma, et al. 



